IRON-MAKING VESSEL

• Main Authors: KIYOTA SADAKIMI, TOMITANI NAOSHI, IIDA ATSUHISA, YOSHIDA KEISUKE
• Format: Patent
• Language: English; Japanese
• Published: 01.10.2015
• Subjects: ARTIFICIAL STONE; BLASTING; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FURNACES; HEATING; KILNS; LIGHTING; LIME, MAGNESIA; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; OVENS; PERFORMING OPERATIONS; POWDER METALLURGY; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; REFRACTORIES; RETORTS; SLAG; TRANSPORTING; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; TREATMENT OF NATURAL STONE; WEAPONS

PROBLEM TO BE SOLVED: To provide an iron-making vessel having an excellent heat loss reduction effect and a materialized long life.SOLUTION: An iron-making vessel 1 receiving and holding molten pig iron 11 tapped from a blast furnace is provided which includes a refractory-lining structure having a steel shell 2, a permanent refractory layer 3, and a work refractory layer 4 in order from the outside. A shaped refractory constituting the work refractory layer is an AlO-pyrophyllite-SiC-C brick obtained by kneading, molding and heating a raw material composition containing a raw material and binder. In the iron-making vessel, carbon content in the raw material is 6 to 9 mass%, pyrophyllite content in the raw material is 10 to 30 mass% and pyrophyllite content having a particle diameter of 1 mm or less in the pyrophyllite is equal to 20 mass% or less. 【課題】熱ロス低減効果に優れ、かつ、長寿命化が実現された製鉄用容器を提供する。【解決手段】溶鉱炉から出湯される溶銑１１を受銑して保持する製鉄用容器１であって、外側から順に、鉄皮２、永久耐火物層３およびワーク耐火物層４を有する耐火物ライニング構造を備え、上記ワーク耐火物層を構成する定形耐火物が、原料および結合材を含む原料組成物を混練、成形、加熱して得られるＡｌ2Ｏ3−ろう石−ＳｉＣ−Ｃレンガであって、上記原料中におけるカーボンの含有量が６〜９質量％であり、上記原料中におけるろう石の含有量が１０〜３０質量％であり、前記ろう石中における粒径１ｍｍ以下のろう石の含有量が２０質量％以下である、製鉄用容器。【選択図】図２６